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📁 example about how to use USB port in application audio with lpc2148
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<title>Static Call Graph - [.\Obj\Audio.axf]</title></head>
<body><HR>
<H1>Static Call Graph for image .\Obj\Audio.axf</H1><HR>
<BR><P>#&#060CALLGRAPH&#062# ARM Linker, RVCT3.1 [Build 903]: Last Updated: Tue Apr 22 23:51:04 2008
<BR><P>
<H3>Maximum Stack Usage =         72 bytes + Unknown(Functions without stacksize, Cycles, Untraceable Function Pointers)</H3><H3>
Call chain for Maximum Stack Depth:</H3>
USB_ISR &rArr; USB_SOF_Event &rArr; USB_ReadEP
<P>
<H3>
Functions with no stack information
</H3><UL>
 <LI><a href="#[c633a8]">Reset_Handler</a>
 <LI><a href="#[c63678]">Undef_Handler</a>
 <LI><a href="#[c63630]">SWI_Handler</a>
 <LI><a href="#[c635e8]">PAbt_Handler</a>
 <LI><a href="#[c635a0]">DAbt_Handler</a>
 <LI><a href="#[c63558]">IRQ_Handler</a>
 <LI><a href="#[c63510]">FIQ_Handler</a>
</UL>
</UL>
<P>
<H3>
Mutually Recursive functions
</H3> <LI><a href="#[c63678]">Undef_Handler</a>&nbsp;&nbsp;&nbsp;&rArr;&nbsp;&nbsp;&nbsp;<a href="#[c63678]">Undef_Handler</a><BR>
 <LI><a href="#[c63630]">SWI_Handler</a>&nbsp;&nbsp;&nbsp;&rArr;&nbsp;&nbsp;&nbsp;<a href="#[c63630]">SWI_Handler</a><BR>
 <LI><a href="#[c635e8]">PAbt_Handler</a>&nbsp;&nbsp;&nbsp;&rArr;&nbsp;&nbsp;&nbsp;<a href="#[c635e8]">PAbt_Handler</a><BR>
 <LI><a href="#[c635a0]">DAbt_Handler</a>&nbsp;&nbsp;&nbsp;&rArr;&nbsp;&nbsp;&nbsp;<a href="#[c635a0]">DAbt_Handler</a><BR>
 <LI><a href="#[c63558]">IRQ_Handler</a>&nbsp;&nbsp;&nbsp;&rArr;&nbsp;&nbsp;&nbsp;<a href="#[c63558]">IRQ_Handler</a><BR>
 <LI><a href="#[c63510]">FIQ_Handler</a>&nbsp;&nbsp;&nbsp;&rArr;&nbsp;&nbsp;&nbsp;<a href="#[c63510]">FIQ_Handler</a><BR>
</UL>
<P>
<H3>
Function Pointers
</H3><UL>
 <LI><a href="#[c633a8]">Reset_Handler</a>
 <LI><a href="#[c63678]">Undef_Handler</a>
 <LI><a href="#[c63630]">SWI_Handler</a>
 <LI><a href="#[c635e8]">PAbt_Handler</a>
 <LI><a href="#[c635a0]">DAbt_Handler</a>
 <LI><a href="#[c63558]">IRQ_Handler</a>
 <LI><a href="#[c63510]">FIQ_Handler</a>
 <LI><a href="#[c5a228]">__main</a>
 <LI><a href="#[c62110]">USB_ISR</a>
 <LI><a href="#[c5ace0]">tc0_isr</a>
 <LI><a href="#[c5ac50]">main</a>
 <LI><a href="#[c5f878]">USB_EndPoint0</a>
 <LI><a href="#[c5d5c8]">USB_EndPoint3</a>
</UL>
<P>
<H3>
Global Symbols
</H3>
<P><STRONG><a name="[c633a8]"></a>Reset_Handler</STRONG> (ARM, 0 bytes, Stack size unknown bytes, startup.o(RESET))

<P><STRONG><a name="[c5a228]"></a>__main</STRONG> (ARM, 8 bytes, Stack size 0 bytes, entry.o($$startup$$))
<BR><BR>[Calls]<UL><LI><a href="#[c59998]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__init (via Veneer)
</UL>

<P><STRONG><a name="[c599e0]"></a>__call_main</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, init.o(.emb_text))
<BR><BR>[Called By]<UL><LI><a href="#[c59998]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__init
</UL>

<P><STRONG><a name="[c620c8]"></a>EPAdr</STRONG> (Thumb, 16 bytes, Stack size 0 bytes, usbhw.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[c61ae0]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_WriteEP
<LI><a href="#[c61b28]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ReadEP
<LI><a href="#[c61b70]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ClrStallEP
<LI><a href="#[c61bb8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetStallEP
<LI><a href="#[c61c00]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ResetEP
<LI><a href="#[c61c48]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_DisableEP
<LI><a href="#[c61c90]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_EnableEP
<LI><a href="#[c61d20]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ConfigEP
</UL>

<P><STRONG><a name="[c62080]"></a>WrCmd</STRONG> (Thumb, 24 bytes, Stack size 0 bytes, usbhw.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[c61a98]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_GetFrame
<LI><a href="#[c61ae0]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_WriteEP
<LI><a href="#[c61b28]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ReadEP
<LI><a href="#[c62110]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ISR (via Veneer)
</UL>

<P><STRONG><a name="[c62038]"></a>WrCmdDat</STRONG> (Thumb, 46 bytes, Stack size 0 bytes, usbhw.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[c61b70]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ClrStallEP
<LI><a href="#[c61bb8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetStallEP
<LI><a href="#[c61c00]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ResetEP
<LI><a href="#[c61c48]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_DisableEP
<LI><a href="#[c61c90]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_EnableEP
<LI><a href="#[c61d68]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_Configure
<LI><a href="#[c61df8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_WakeUp
<LI><a href="#[c61e40]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_Connect
<LI><a href="#[c61fa8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetAddress
</UL>

<P><STRONG><a name="[c61ff0]"></a>RdCmdDat</STRONG> (Thumb, 30 bytes, Stack size 0 bytes, usbhw.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[c61a98]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_GetFrame
<LI><a href="#[c62110]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ISR (via Veneer)
</UL>

<P><STRONG><a name="[c61fa8]"></a>USB_SetAddress</STRONG> (Thumb, 50 bytes, Stack size 8 bytes, usbhw.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 8<LI>Call Chain = USB_SetAddress
</UL>
<BR>[Calls]<UL><LI><a href="#[c62038]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;WrCmdDat
</UL>
<BR>[Called By]<UL><LI><a href="#[c5f878]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_EndPoint0
<LI><a href="#[c61e88]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_Init
</UL>

<P><STRONG><a name="[c61f60]"></a>USB_Reset</STRONG> (Thumb, 58 bytes, Stack size 0 bytes, usbhw.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[c61e88]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_Init
<LI><a href="#[c62110]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ISR (via Veneer)
</UL>

<P><STRONG><a name="[c61f18]"></a>USB_Resume</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, usbhw.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[c62110]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ISR (via Veneer)
</UL>

<P><STRONG><a name="[c61ed0]"></a>USB_Suspend</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, usbhw.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[c62110]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_ISR (via Veneer)
</UL>

<P><STRONG><a name="[c61e88]"></a>USB_Init</STRONG> (Thumb, 130 bytes, Stack size 4 bytes, usbhw.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 12<LI>Call Chain = USB_Init &rArr; USB_SetAddress
</UL>
<BR>[Calls]<UL><LI><a href="#[c61f60]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_Reset
<LI><a href="#[c61fa8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetAddress
</UL>
<BR>[Called By]<UL><LI><a href="#[c5ac50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;main
</UL>

<P><STRONG><a name="[c61e40]"></a>USB_Connect</STRONG> (Thumb, 34 bytes, Stack size 8 bytes, usbhw.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 8<LI>Call Chain = USB_Connect
</UL>
<BR>[Calls]<UL><LI><a href="#[c62038]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;WrCmdDat
</UL>
<BR>[Called By]<UL><LI><a href="#[c5ac50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;main
</UL>

<P><STRONG><a name="[c61df8]"></a>USB_WakeUp</STRONG> (Thumb, 24 bytes, Stack size 4 bytes, usbhw.o(.text), UNUSED)
<BR><BR>[Calls]<UL><LI><a href="#[c62038]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;WrCmdDat
</UL>

<P><STRONG><a name="[c61db0]"></a>USB_WakeUpCfg</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, usbhw.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[c5f7a0]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetClrFeature
</UL>

<P><STRONG><a name="[c61d68]"></a>USB_Configure</STRONG> (Thumb, 64 bytes, Stack size 8 bytes, usbhw.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 8<LI>Call Chain = USB_Configure
</UL>
<BR>[Calls]<UL><LI><a href="#[c62038]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;WrCmdDat
</UL>
<BR>[Called By]<UL><LI><a href="#[c5f758]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetConfiguration
</UL>

<P><STRONG><a name="[c61d20]"></a>USB_ConfigEP</STRONG> (Thumb, 74 bytes, Stack size 8 bytes, usbhw.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 8<LI>Call Chain = USB_ConfigEP
</UL>
<BR>[Calls]<UL><LI><a href="#[c620c8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;EPAdr
</UL>
<BR>[Called By]<UL><LI><a href="#[c5f710]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetInterface
<LI><a href="#[c5f758]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetConfiguration
</UL>

<P><STRONG><a name="[c61cd8]"></a>USB_DirCtrlEP</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, usbhw.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[c5f878]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_EndPoint0
</UL>

<P><STRONG><a name="[c61c90]"></a>USB_EnableEP</STRONG> (Thumb, 30 bytes, Stack size 12 bytes, usbhw.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 12<LI>Call Chain = USB_EnableEP
</UL>
<BR>[Calls]<UL><LI><a href="#[c62038]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;WrCmdDat
<LI><a href="#[c620c8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;EPAdr
</UL>
<BR>[Called By]<UL><LI><a href="#[c5f710]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetInterface
<LI><a href="#[c5f758]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetConfiguration
</UL>

<P><STRONG><a name="[c61c48]"></a>USB_DisableEP</STRONG> (Thumb, 30 bytes, Stack size 12 bytes, usbhw.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 12<LI>Call Chain = USB_DisableEP
</UL>
<BR>[Calls]<UL><LI><a href="#[c62038]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;WrCmdDat
<LI><a href="#[c620c8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;EPAdr
</UL>
<BR>[Called By]<UL><LI><a href="#[c5f710]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetInterface
<LI><a href="#[c5f758]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetConfiguration
</UL>

<P><STRONG><a name="[c61c00]"></a>USB_ResetEP</STRONG> (Thumb, 30 bytes, Stack size 12 bytes, usbhw.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 12<LI>Call Chain = USB_ResetEP
</UL>
<BR>[Calls]<UL><LI><a href="#[c62038]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;WrCmdDat
<LI><a href="#[c620c8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;EPAdr
</UL>
<BR>[Called By]<UL><LI><a href="#[c5f710]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetInterface
<LI><a href="#[c5f758]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;USB_SetConfiguration

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